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interventionism

[in-ter-ven-shuh-niz-uh m]
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noun
  1. the policy or doctrine of intervening, especially government interference in the affairs of another state or in domestic economic affairs.
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Origin of interventionism

First recorded in 1920–25; intervention + -ism
Related formsin·ter·ven·tion·ist, noun, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for interventionist

interventionist

adjective
  1. of, relating to, or advocating intervention, esp in the affairs of a foreign country
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noun
  1. an interventionist person or state
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Derived Formsinterventionism, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for interventionist

interventionism

n.

1923, from intervention + -ism. Interventionist, as a noun, is recorded from 1839.

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Online Etymology Dictionary, © 2010 Douglas Harper